This is the 2653rd most frequent Chinese word.
高铁
High-speed rail.
In this sentence, '高铁 (gāo tiě)' is used as a noun referring to the mode of transportation, the high-speed train.
我常乘坐高铁去附近的城市。
I often take the high-speed train to nearby cities.
Here, '高铁 (gāo tiě)' acts as the subject of the sentence, emphasizing its role in modern society.
高铁如今成了人们生活中不可或缺的一部分。
High-speed trains have now become an indispensable part of people's lives.
In this context, '高铁 (gāo tiě)' appears as a means of travel being compared with driving a car.